Page 15
BVI 3000 Operator’s Manual
Verifying Aim
Aiming Screen
The greatest measured bladder volume is displayed in large type in the
upper left-hand corner of the Aiming screen. Also displayed are the
target-shaped Aiming Icon, the instrument status (READY TO SCAN),
and the current volume measurement.
Largest Volume and
Current Volume
The BVI 3000 always displays two volumes; the largest volume
measured and the current volume.
Verathon
®
recommends that you take several measurements to ensure
maximum accuracy. The BVI 3000 assumes that the largest volume
measured is the true bladder volume, because in most cases the largest
volume is the most accurate. Exceptions occur when the operator moves
the probe during the scan, or fails to select the female gender when
required. In these situations, the largest volume measurement may be
higher than the actual bladder volume, and the operator should clear the
aiming screen before rescanning the patient.
Clearing the Screen
To clear the scan results screen, press the clear button, which is labeled
with an “X” on the LCD screen. If your instrument does not have a clear
button, clear the screen by pressing the DONE button and then pressing
the SCAN button to start over. Then rescan your patient. In the following
section, we explain how to ensure maximum accuracy by adjusting your
aim.
The Aiming Icon
The light area inside the target-shaped Aiming Icon represents the
position of the bladder relative to the scanhead. Accurate results are
obtained when the bladder image is centered on the crosshairs of the
Aiming Icon. If the bladder is not centered, re-aim the scanhead and
rescan the patient. Repeat until the image is properly centered
(see Figure 1).
Adjusting Aim
The Aiming Icon displays the bladder as viewed when looking down on
the patient’s abdomen. To adjust your aim, slightly move or angle the
scanhead toward the direction of the bladder image on the Aiming Icon
(target). For example, if the bladder image is located on the right side of
the icon, aim the scanhead so the ultrasound will be projected further to
the right.
